How to check a component is dynamic component?

How to check a component is dynamic component in ruby api?
Is there anything like .is_a? DynamicComponent or is_dynamic method for component object?

#Look for the dynamic_attributes dictionary, kept in instances for groups, and definitions for components

  def is_dynamic?(dc)
    dc.attribute_dictionary('dynamic_attributes') || dc.definition.attribute_dictionary('dynamic_attributes')
  end
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