@staticmethod
def get_sequenceinsertion(sequence, indent) ->str:
    """Return the insertion string required for the given sequence.

        >>> from hydpy.auxs.xmltools import XSDWriter
        >>> from hydpy import prepare_model
        >>> model = prepare_model('hland_v1')
        >>> print(XSDWriter.get_sequenceinsertion(model.sequences.fluxes.pc, 1))
            <element
                name="pc"
                minOccurs="0"/>
        """
    blanks = ' ' * (indent * 4)
    return (
        f'{blanks}<element\n{blanks}    name="{sequence.name}"\n{blanks}    minOccurs="0"/>'
        )
