Function read_symbol_slice_from_source_with_selection 

pub fn read_symbol_slice_from_source_with_selection(
    store: &AtlasStore,
    file: &Path,
    selector: &SymbolSliceSelector<'_>,
    source: &str,
    content_selection: ContentSelection,
) -> ServiceResult<CodeSlice>

Read an exact symbol body from verified source after classified selection.

Errors

Returns an error when the file is outside the explicit selection, or the symbol is absent, ambiguous, rejected by the selector, or out of range.