Constant DART 

pub const DART: &str = r#"
    (function_signature
      name: (identifier) @name) @function

    (class_definition
      name: (identifier) @name) @class

    (method_signature
      (function_signature
        name: (identifier) @name)) @method

    (enum_declaration
      name: (identifier) @name) @enum

    (mixin_declaration
      (identifier) @name) @class
"#;

Dart symbol extraction query