function containsOnlyIdentifiers(node) {
			if (node.type === "Identifier") {
				return true;
			}

			if (node.type === "MemberExpression") {
				if (node.object.type === "Identifier") {
					return true;
				}
				if (node.object.type === "MemberExpression") {
					return containsOnlyIdentifiers(node.object);
				}
			}

			return false;
		}
Check to see if a node contains only identifiers
@param {ASTNode} node The node to check
@returns {boolean} Whether or not the node contains only identifiers