private static void addProposal(
Identifier identifier, Collection<ICompletionProposal> proposals, IFile file) {
String oldIdentifier = identifier.getText();
int first = oldIdentifier.codePointAt(0);
int newFirst = isUpperCase(first) ? toLowerCase(first) : toUpperCase(first);
String newFirstLetter = new String(toChars(newFirst));
String newIdentifier = newFirstLetter + oldIdentifier.substring(charCount(first));
TextFileChange change = new TextFileChange("Change initial case of identifier", file);
change.setEdit(new ReplaceEdit(identifier.getStartIndex(), 1, newFirstLetter));
ChangeInitialCaseOfIdentifierInDeclaration proposal =
new ChangeInitialCaseOfIdentifierInDeclaration(newIdentifier, change);
if (!proposals.contains(proposal)) {
proposals.add(proposal);
}
}
