String (final PsiType[] argTypes) { StringBuilder builder = new StringBuilder().append(myReferenceExpression.getReferenceName()); builder.append("("); for (int i = 0; i < argTypes.length; i++) { PsiType type = argTypes[i]; if (i > 0) { builder.append(", "); } if (type == null) { builder.append("Object"); } else { builder.append(type.getPresentableText()); } } builder.append(")"); return builder.toString(); }