function _startsWithNavigationProperty(sPropertyPath, aNavigationProperties) {
		return aNavigationProperties.some(function(sNavProp) {
			if (sPropertyPath.startsWith(sNavProp)) {
				return true;
			}
		});
	}
Check if a given property path starts with a navigation property.

@param {string} sPropertyPath Path of the property
@param {object} aNavigationProperties The list of navigation properties of the entity type
@returns {boolean} `true` if the property path starts with a navigation property
@private