A biasing PhraseSet, which can be either a string referencing
the name of an existing PhraseSets resource, or an inline
definition of a PhraseSet.
This message has oneof_ fields (mutually exclusive fields).
For each oneof, at most one member field can be set at the same time.
Setting any member of the oneof automatically clears all other
members.
str
The name of an existing PhraseSet resource.
The user must have read access to the resource
and it must not be deleted.
This field is a member of oneof_ value.