original_string: public function getBindingCallback($key)
      {
          if (isset($this->binders[$key = str_replace('-', '_', $key)])) {
              return $this->binders[$key];
          }
      }
code: public function getBindingCallback($key)
      {
          if (isset($this->binders[$key = str_replace('-', '_', $key)])) {
              return $this->binders[$key];
          }
      }
code_tokens: public function getBindingCallback ( $ key ) { if ( isset ( $ this -> binders [ $ key = str_replace ( '-' , '_' , $ key ) ] ) ) { return $ this -> binders [ $ key ] ; } }
docstring: Get the binding callback for a given binding.
  
  @param  string  $key
  @return \Closure|null
docstring_tokens: Get the binding callback for a given binding .