class YARD::ActiveSupport::Concern::IncludedHandler

def process

or module).
Process any found `included` block within a "namespace" scope (class 
def process
  # `statement.last.last` refers to the statements within the block
  # given to `included`. YARD will parse those and attach any generated
  # documentation to the current namespace at the instance level (unless
  # overridden with a @!scope directive)
  parse_block(statement.last.last, namespace: namespace, scope: :instance)
end