original_string: public function exists(...$keys)
      {
          $keys = collect($keys)->map(function ($key) {
              return $this->applyPrefix($key);
          })->all();
  
          return $this->executeRaw(array_merge(['exists'], $keys));
      }
code: public function exists(...$keys)
      {
          $keys = collect($keys)->map(function ($key) {
              return $this->applyPrefix($key);
          })->all();
  
          return $this->executeRaw(array_merge(['exists'], $keys));
      }
code_tokens: public function exists ( ... $ keys ) { $ keys = collect ( $ keys ) -> map ( function ( $ key ) { return $ this -> applyPrefix ( $ key ) ; } ) -> all ( ) ; return $ this -> executeRaw ( array_merge ( [ 'exists' ] , $ keys ) ) ; }
docstring: Determine if the given keys exist.
  
  @param  dynamic  $keys
  @return int
docstring_tokens: Determine if the given keys exist .