void generateFieldInitialization(@NotNull StringBuilder buffer,
                                   PsiField @NotNull [] fields,
                                   PsiParameter @NotNull [] parameters,
                                   @NotNull Collection<String> existingNames);
void generateFieldInitialization(@NotNull StringBuilder buffer,
                                   PsiField @NotNull [] fields,
                                   PsiParameter @NotNull [] parameters,
                                   @NotNull Collection<String> existingNames)