parameters: (self, icmp_data)
docstring: Check for ICMP traffic.
          @param icmp_data: ICMP data flow.
docstring_summary: Check for ICMP traffic.
docstring_tokens: Check for ICMP traffic .
function: def _check_icmp(self, icmp_data):
          """Check for ICMP traffic.
          @param icmp_data: ICMP data flow.
          """
          try:
              return isinstance(icmp_data, dpkt.icmp.ICMP) and \
                  len(icmp_data.data) > 0
          except:
              return False
function_tokens: def _check_icmp ( self , icmp_data ) : try : return isinstance ( icmp_data , dpkt . icmp . ICMP ) and len ( icmp_data . data ) > 0 except : return False