class Steep::AST::Annotation::Collection

def merge_block_annotations(annotations)
  if annotations.current_module != current_module || annotations.factory != factory
    raise "Cannot merge another annotation: self=#{self}, other=#{annotations}"
  end
  retained_annotations = self.annotations.reject do |annotation|
    annotation.is_a?(BlockType) || annotation.is_a?(BreakType)
  end
  self.class.new(annotations: retained_annotations + annotations.annotations,
                 factory: factory,
                 current_module: current_module)
end