<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:

def resolve_params(self, text):
        " Parse the parameters into a dict. "
        params = MultiValueDict()
        for line in text.split('\n'):
            pair = line.split(':', 1)
            if len(pair) == 2:
                params.appendlist(pair[0].strip(), pair[1].strip())
        return params