original_string: public function getByClaimName($name, callable $callback = null, $default = null)
      {
          return $this->filter(function (Claim $claim) use ($name) {
              return $claim->getName() === $name;
          })->first($callback, $default);
      }
code: public function getByClaimName($name, callable $callback = null, $default = null)
      {
          return $this->filter(function (Claim $claim) use ($name) {
              return $claim->getName() === $name;
          })->first($callback, $default);
      }
code_tokens: public function getByClaimName ( $ name , callable $ callback = null , $ default = null ) { return $ this -> filter ( function ( Claim $ claim ) use ( $ name ) { return $ claim -> getName ( ) === $ name ; } ) -> first ( $ callback , $ default ) ; }
docstring: Get a Claim instance by it's unique name.
  
  @param  string  $name
  @param  callable  $callback
  @param  mixed  $default
  
  @return \Tymon\JWTAuth\Claims\Claim
docstring_tokens: Get a Claim instance by it s unique name .