(script
  (class_declaration
    name: (identifier)
    (type_parameters
      (type_parameter
        name: (identifier)))
    (extends_clause
      (type_specifier
        (qualified_identifier
          (identifier))
        (type_arguments
          (type_specifier
            (qualified_identifier
              (identifier))))))
    (implements_clause
      (type_specifier
        (qualified_identifier
          (identifier))
        (type_arguments
          (type_specifier
            (qualified_identifier
              (identifier))))))
    (where_clause
      (where_constraint
        constraint_left_type: (type_specifier
          (qualified_identifier
            (identifier)))
        constraint_right_type: (type_specifier
          (qualified_identifier
            (identifier)))))
    body: (member_declarations
      (method_declaration
        (visibility_modifier)
        name: (identifier)
        (parameters
          (parameter
            type: (type_specifier
              (qualified_identifier
                (identifier)))
            name: (variable)))
        (where_clause
          (where_constraint
            constraint_left_type: (type_specifier
              (nullable_modifier)
              (qualified_identifier
                (identifier)))
            constraint_right_type: (type_specifier
              (type_arguments
                (type_specifier)))))
        body: (compound_statement)))))