function array(oObject, vProperty) {
				oObject[vProperty] = oObject[vProperty] || [];

				return oObject[vProperty];
			}
Implementation of methods {@link #expectChange} and {@link #expectValue}; see
documentation of these for a description. Only the return statement is overridden.

@param {string} sControlId
  The control ID
@param {string|string[]|boolean|null} [vValue]
  The expected value, see {@link #expectChange} and {@link #expectValue}
@param {number|string} [vRow]
  The row index, see {@link #expectChange} and {@link #expectValue}

@returns {boolean} Whether the expected change is for a list element