async def METHOD_NAME(self, index, value, timestamp=None):
    """
    Write value to mutable tensor.
    Parameters
    ----------
    index:
        Index to write to the tensor.
    value:
        The value that will be filled into the mutable tensor according to `index`.
    timestamp: optional
        Timestamp to associated with the newly touched value.
    """
    return await self._mutable_api.METHOD_NAME(self.name, index, value, timestamp)