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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 cl_picard(self, command, options, memscale=None):
 """Prepare a Picard commandline. """

        options = ["%s=%s" % (x, y) for x, y in options]
        options.append("VALIDATION_STRINGENCY=SILENT")
        return self._get_picard_cmd(command, memscale=memscale) + options