add_custom_postfix_completions

ide_completion::completions::postfix

Function add_custom_postfix_completions 

Source 
fn add_custom_postfix_completions(
    acc: &mut Completions,
    ctx: &CompletionContext<'_>,
    postfix_snippet: impl Fn(&str, &str, &str) -> Builder,
    receiver_text: &str,
) -> Option<()>