LexicalBlock

        pub const LexicalBlock = struct {
            pub const ops = [_]AbbrevOp{
                .{ .literal = @backingInt(ModuleBlock.MetadataBlock.Code.LEXICAL_BLOCK) },
                .{ .literal = 0 }, // is distinct
                MetadataAbbrev, // scope
                MetadataAbbrev, // file
                LineAbbrev, // line
                ColumnAbbrev, // column
            };

            scope: Builder.Metadata.Optional,
            file: Builder.Metadata.Optional,
            line: u32,
            column: u32,
        }