code: public void setCredentials(java.util.Collection<Credential> credentials) {
          if (credentials == null) {
              this.credentials = null;
              return;
          }
  
          this.credentials = new java.util.ArrayList<Credential>(credentials);
      }
docs: <p>
  The termination SIP credentials.
  </p>
  
  @param credentials
  The termination SIP credentials.