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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def addInHeaderInfo(self, name, type, namespace, element_type=0, mustUnderstand=0):
 """Add an input SOAP header description to the call info."""

        headerinfo = HeaderInfo(name, type, namespace, element_type)
        if mustUnderstand:
            headerinfo.mustUnderstand = 1
        self.inheaders.append(headerinfo)
        return headerinfo