Function sourceview5_sys::gtk_source_indenter_is_trigger

pub unsafe extern "C" fn gtk_source_indenter_is_trigger(
    self_: *mut GtkSourceIndenter, 
    view: *mut GtkSourceView, 
    location: *const GtkTextIter, 
    state: GdkModifierType, 
    keyval: c_uint
) -> gboolean

This is supported on crate feature v5_0 only.