How to use the micromagneticmodel.Evolver function in micromagneticmodel

import micromagneticmodel as mm


class SpinTEvolver(mm.Evolver):
    """Zhang-Li evolver.

    Only attributes in ``_allowed_attributes`` can be defined. For details on
    possible values for individual attributes and their default values, please
    refer to ``Anv_SpinTEvolve`` documentation
    (https://www.zurich.ibm.com/st/nanomagnetism/spintevolve.html).

    Examples
    --------
    1. Defining evolver with a keyword argument.

    >>> import oommfc as oc
    ...
    >>> evolver = oc.SpinTEvolver(method='rk4')

    2. Passing an argument which is not allowed.

import micromagneticmodel as mm


class CGEvolver(mm.Evolver):
    """Conjugate-Gradient evolver.

    Only attributes in ``_allowed_attributes`` can be defined. For details on
    possible values for individual attributes and their default values, please
    refer to ``Oxs_CGEvolver`` documentation (https://math.nist.gov/oommf/).

    Examples
    --------
    1. Defining evolver with a keyword argument.

    >>> import oommfc as oc
    ...
    >>> evolver = oc.CGEvolver(method='Polak-Ribiere')

    2. Passing an argument which is not allowed.

import micromagneticmodel as mm


class EulerEvolver(mm.Evolver):
    """Euler evolver.

    Only attributes in ``_allowed_attributes`` can be defined. For details on
    possible values for individual attributes and their default values, please
    refer to ``Oxs_EulerEvolver`` documentation (https://math.nist.gov/oommf/).

    Examples
    --------
    1. Defining evolver with a keyword argument.

    >>> import oommfc as oc
    ...
    >>> evolver = oc.EulerEvolver(min_timestep=0)

    2. Passing an argument which is not allowed.

import micromagneticmodel as mm


class RungeKuttaEvolver(mm.Evolver):
    """Runge-Kutta evolver.

    Only attributes in ``_allowed_attributes`` can be defined. For details on
    possible values for individual attributes and their default values, please
    refer to ``Oxs_RungeKuttaEvolver`` documentation
    (https://math.nist.gov/oommf/).

    Examples
    --------
    1. Defining evolver with a keyword argument.

    >>> import oommfc as oc
    ...
    >>> evolver = oc.RungeKuttaEvolver(method='rk4')

    2. Passing an argument which is not allowed.