private PsiMethod generateMethodBodyFor( PsiMethod method, String propertyName, String parameterName, PsiElementFactory elementFactory) { StringBuilder methodBodyBuilder = new StringBuilder() .append("{\n") .append("this.") .append(propertyName) .append("=") .append(parameterName) .append(";\n") .append("return this;\n") .append("}\n"); PsiCodeBlock methodBody = elementFactory.createCodeBlockFromText(methodBodyBuilder.toString(), null); method.getBody().replace(methodBody); method = (PsiMethod) CodeStyleManager.getInstance(method.getProject()).reformat(method); return method; }