code: function _objFilter(obj, eql) {
      return function(objWithTimeout){
          return (eql ? (obj === objWithTimeout.obj) : (obj !== objWithTimeout.obj));
      };
  }
docs: Creates a filter usable for finding a client in the available clients list.
  
  @private
  @memberof PromisePool
  
  @param {PromisePool.Client} obj
  The client to filter the list for.
  
  @param {bool} eql
  Indicates if the test should be for equality (`===`) or not (`!==`).
  
  @return {Function} A function which can be used for array filtering methods.