Deduplicate any options which are the same parameter.
The value which comes last in collection and os will be the value included
in the return. All options from os will override their counterparts in
collection.
Deduplicate any options which are the same parameter.
The value which comes last in collection and os will be the value included
in the return. All options from os will override their counterparts in
collection.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-02 UTC."],[],[],null,["# Class Bucket.BucketSourceOption (2.55.0)\n\nVersion latestkeyboard_arrow_down\n\n- [2.55.0 (latest)](/java/docs/reference/google-cloud-storage/latest/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.54.0](/java/docs/reference/google-cloud-storage/2.54.0/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.53.3](/java/docs/reference/google-cloud-storage/2.53.3/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.52.3](/java/docs/reference/google-cloud-storage/2.52.3/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.50.0](/java/docs/reference/google-cloud-storage/2.50.0/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.49.0](/java/docs/reference/google-cloud-storage/2.49.0/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.48.2](/java/docs/reference/google-cloud-storage/2.48.2/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.47.0](/java/docs/reference/google-cloud-storage/2.47.0/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.46.0](/java/docs/reference/google-cloud-storage/2.46.0/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.45.0](/java/docs/reference/google-cloud-storage/2.45.0/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.44.1](/java/docs/reference/google-cloud-storage/2.44.1/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.43.2](/java/docs/reference/google-cloud-storage/2.43.2/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.42.0](/java/docs/reference/google-cloud-storage/2.42.0/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.41.0](/java/docs/reference/google-cloud-storage/2.41.0/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.40.1](/java/docs/reference/google-cloud-storage/2.40.1/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.39.0](/java/docs/reference/google-cloud-storage/2.39.0/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.38.0](/java/docs/reference/google-cloud-storage/2.38.0/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.37.0](/java/docs/reference/google-cloud-storage/2.37.0/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.36.1](/java/docs/reference/google-cloud-storage/2.36.1/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.34.0](/java/docs/reference/google-cloud-storage/2.34.0/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.33.0](/java/docs/reference/google-cloud-storage/2.33.0/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.32.1](/java/docs/reference/google-cloud-storage/2.32.1/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.30.1](/java/docs/reference/google-cloud-storage/2.30.1/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.29.1](/java/docs/reference/google-cloud-storage/2.29.1/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.28.0](/java/docs/reference/google-cloud-storage/2.28.0/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.27.1](/java/docs/reference/google-cloud-storage/2.27.1/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.24.0](/java/docs/reference/google-cloud-storage/2.24.0/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.23.0](/java/docs/reference/google-cloud-storage/2.23.0/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.22.6](/java/docs/reference/google-cloud-storage/2.22.6/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.21.0](/java/docs/reference/google-cloud-storage/2.21.0/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.20.2](/java/docs/reference/google-cloud-storage/2.20.2/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.19.0](/java/docs/reference/google-cloud-storage/2.19.0/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.18.0](/java/docs/reference/google-cloud-storage/2.18.0/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.17.2](/java/docs/reference/google-cloud-storage/2.17.2/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.16.0](/java/docs/reference/google-cloud-storage/2.16.0/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.15.1](/java/docs/reference/google-cloud-storage/2.15.1/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.14.0](/java/docs/reference/google-cloud-storage/2.14.0/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.13.1](/java/docs/reference/google-cloud-storage/2.13.1/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.12.0](/java/docs/reference/google-cloud-storage/2.12.0/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.11.3](/java/docs/reference/google-cloud-storage/2.11.3/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.10.0](/java/docs/reference/google-cloud-storage/2.10.0/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.9.3](/java/docs/reference/google-cloud-storage/2.9.3/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.8.1](/java/docs/reference/google-cloud-storage/2.8.1/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.7.1](/java/docs/reference/google-cloud-storage/2.7.1/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.6.1](/java/docs/reference/google-cloud-storage/2.6.1/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.5.1](/java/docs/reference/google-cloud-storage/2.5.1/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.4.5](/java/docs/reference/google-cloud-storage/2.4.5/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.3.0](/java/docs/reference/google-cloud-storage/2.3.0/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.2.3](/java/docs/reference/google-cloud-storage/2.2.3/com.google.cloud.storage.Bucket.BucketSourceOption)\n- [2.1.10](/java/docs/reference/google-cloud-storage/2.1.10/com.google.cloud.storage.Bucket.BucketSourceOption) \n\n public static class Bucket.BucketSourceOption extends Option\u003cUnifiedOpts.BucketSourceOpt\u003e\n\nClass for specifying bucket source options when `Bucket` methods are used. \n\nInheritance\n-----------\n\n[java.lang.Object](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html) \\\u003e com.google.cloud.storage.UnifiedOpts.OptionShim \\\u003e [Option](/java/docs/reference/google-cloud-storage/latest/com.google.cloud.storage.Option) \\\u003e Bucket.BucketSourceOption \n\nInherited Members\n-----------------\n\ncom.google.cloud.storage.UnifiedOpts.OptionShim.equals(java.lang.Object) \ncom.google.cloud.storage.UnifiedOpts.OptionShim.hashCode() \ncom.google.cloud.storage.UnifiedOpts.OptionShim.toString() \n[Object.clone()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#clone--) \n[Object.finalize()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#finalize--) \n[Object.getClass()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#getClass--) \n[Object.notify()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notify--) \n[Object.notifyAll()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notifyAll--) \n[Object.wait()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait--) \n[Object.wait(long)](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-) \n[Object.wait(long,int)](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-int-)\n\nStatic Methods\n--------------\n\n### dedupe(Bucket.BucketSourceOption\\[\\] os)\n\n public static Bucket.BucketSourceOption[] dedupe(Bucket.BucketSourceOption[] os)\n\nDeduplicate any options which are the same parameter. The value which comes last in `\nos` will be the value included in the return.\n\n### dedupe(Bucket.BucketSourceOption\\[\\] array, Bucket.BucketSourceOption\\[\\] os)\n\n public static Bucket.BucketSourceOption[] dedupe(Bucket.BucketSourceOption[] array, Bucket.BucketSourceOption[] os)\n\nDeduplicate any options which are the same parameter.\n\nThe value which comes last in `collection` and `os` will be the value included\nin the return. All options from `os` will override their counterparts in `\ncollection`.\n\n### dedupe(Collection\\\u003cBucket.BucketSourceOption\\\u003e collection, Bucket.BucketSourceOption\\[\\] os)\n\n public static Bucket.BucketSourceOption[] dedupe(Collection\u003cBucket.BucketSourceOption\u003e collection, Bucket.BucketSourceOption[] os)\n\nDeduplicate any options which are the same parameter.\n\nThe value which comes last in `collection` and `os` will be the value included\nin the return. All options from `os` will override their counterparts in `\ncollection`.\n\n### metagenerationMatch()\n\n public static Bucket.BucketSourceOption metagenerationMatch()\n\nReturns an option for bucket's metageneration match. If this option is used the request will\nfail if metageneration does not match.\n\n### metagenerationNotMatch()\n\n public static Bucket.BucketSourceOption metagenerationNotMatch()\n\nReturns an option for bucket's metageneration mismatch. If this option is used the request\nwill fail if metageneration matches.\n\n### userProject(@NonNull String userProject)\n\n public static Bucket.BucketSourceOption userProject(@NonNull String userProject)\n\nReturns an option for blob's billing user project. This option is only used by the buckets\nwith 'requester_pays' flag."]]
