function _isComplexType(mProperty) {
		if (mProperty && mProperty.$Type) {
			if (mProperty.$Type.toLowerCase().indexOf("edm") !== 0) {
				return true;
			}
		}
		return false;
	}
Is property of complex type.

@param {object} mProperty Property from entity type
@returns {boolean} `true` if property is of complex type
@private