{"ast_node_type":"variable","tokens":[{"end":66,"kind":"keyword","start":0,"text":"let"}]}
    let field2 = builder.context.new_field(None, m128i, "field2");
    let field1 = builder.context.new_field(None, builder.u32_type, "field1");
    let field3 = builder.context.new_field(None, m128i, "field3");