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cc_credentials_compare(): Compare two credentials objects. 
 
 Parameters:
  
    |  | in_credentials | a credentials object. |  |  | in_compare_to_credentials | a credentials object to compare with in_credentials. |  |  | out_equal | on exit, whether or not the two credentials objects refer to the same credentials in the cache collection. | 
 Returns:On success, ccNoError. On failure, an error code representing the failure. 
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