def _validate_jti(claims):
if '<STR_LIT>' not in claims:<EOL><INDENT>return<EOL><DEDENT>if not isinstance(claims['<STR_LIT>'], string_types):<EOL><INDENT>raise JWTClaimsError('<STR_LIT>')<EOL><DEDENT>
Validates that the 'jti' claim is valid.

    The "jti" (JWT ID) claim provides a unique identifier for the JWT.
    The identifier value MUST be assigned in a manner that ensures that
    there is a negligible probability that the same value will be
    accidentally assigned to a different data object; if the application
    uses multiple issuers, collisions MUST be prevented among values
    produced by different issuers as well.  The "jti" claim can be used
    to prevent the JWT from being replayed.  The "jti" value is a case-
    sensitive string.  Use of this claim is OPTIONAL.

    Args:
        claims (dict): The claims dictionary to validate.