@Contract(pure=true)
  public @NotNull LookupElementBuilder withCaseSensitivity(boolean caseSensitive) {
    return cloneWithUserData(myLookupString, myObject, myInsertHandler, myRenderer, myExpensiveRenderer, myHardcodedPresentation,
                             myPsiElement, myAllLookupStrings, caseSensitive);
  }
@Contract(pure=true)
  public @NotNull LookupElementBuilder withCaseSensitivity(boolean caseSensitive)