public boolean isProcessing() {
        return currentState != RenderState.IDLE;
    }
Displays a hint with the given content. Optionally removes any existing hint before displaying the new one.

@param content        the content of the hint to be displayed
@param removeExisting if true, removes any currently displayed hint before showing the new one
plugins/org.jkiss.dbeaver.ui.editors.sql/src/org/jkiss/dbeaver/ui/editors/sql/suggestion/SQLSuggestionTextPainter.java