Download file using curl in groovy

curl.groovy

#!/usr/bin/env groovy

def execute(command) {
   def proc = command.execute()
   def out = new StringBuffer()
   def err = new StringBuffer()

   proc.consumeProcessOutput(out, err)
   proc.waitFor()
   if( out.size() > 0 ) println out
   if( err.size() > 0 ) println err
   return [ 'out':out.toString(), 'err':err.toString() ]
}  

// --max-time <seconds> 
def response = execute("curl --max-time 6 --retry 6 -O http://www.scscourt.org/online_services/jury/jury_duty.shtml#tables")
assert response['out'] == ''