docs: public static MemberExistsResult fieldExists(String fieldName, JavacNode node) {
  		node = upToTypeNode(node);
  		
  		if (node != null && node.get() instanceof JCClassDecl) {
  			for (JCTree def : ((JCClassDecl)node.get()).defs) {
  				if (def instanceof JCVariableDecl) {
  					if (((JCVariableDecl)def).name.contentEquals(fieldName)) {
  						return getGeneratedBy(def) == null ? MemberExistsResult.EXISTS_BY_USER : MemberExistsResult.EXISTS_BY_LOMBOK;
  					}
  				}
  			}
  		}
  		
  		return MemberExistsResult.NOT_EXISTS;
  	}