code: def make_fileitem_peinfo_digitalsignature_signatureexists(sig_exists, condition='is', negate=False):
      
      document = 'FileItem'
      search = 'FileItem/PEInfo/DigitalSignature/SignatureExists'
      content_type = 'bool'
      content = sig_exists
      ii_node = ioc_api.make_indicatoritem_node(condition, document, search, content_type, content,
                                                negate=negate)
      return ii_node
docs: Create a node for FileItem/PEInfo/DigitalSignature/SignatureExists
      
      :return: A IndicatorItem represented as an Element node