Values:
JSON_PATH_MATCHER_OPTION_UNSPECIFIED (0):
No JSONPath matcher type specified (not
valid).
EXACT_MATCH (1):
Selects 'exact string' matching. The match succeeds if the
content at the json_path within the output is exactly
the same as the content string.
REGEX_MATCH (2):
Selects regular-expression matching. The match succeeds if
the content at the json_path within the output matches
the regular expression specified in the content string.