Function element_pp_log 

pub fn element_pp_log(
    element_type: ElementType,
    name: &str,
    pipeline_id: Option<&str>,
) -> PpLog

Builds the PpLog every element constructs for its own Element::pp_log field, and that crate::pipeline::ChainBuilder/crate::pipeline::Pipeline rebuild once they know which pipeline an element belongs to. Keeps the element type, instance name, and pipeline id as separate fields, so a log reader does not need to parse a combined display string. The pipeline id is None for an element that isn’t wired into a Pipeline at all (e.g. most of this crate’s own tests). Public so a custom Element implemented outside this crate (see ElementType::Other) can build its own pp_log field the same way.