code: def _init_data(self, data, dtype, mask, keep_mask):
      if _is_masked_array(data):
          self._data = (
              ivy.array(data.data, dtype=dtype)
              if ivy.exists(dtype)
              else ivy.array(data.data)
          )
          self._init_mask(mask)
          if keep_mask:
              if not isinstance(data.mask, bool):
                  ivy.utils.assertions.check_equal(
                      ivy.shape(self._mask),
                      ivy.shape(data.mask),
                      message="shapes of input mask does not match current mask",
                      as_array=False,
                  )
              self._mask = ivy.bitwise_or(self._mask, data.mask)
      else:
          self._data = (
              ivy.array(data, dtype=dtype)
              if ivy.exists(dtype)
              else ivy.array(data)
          )
          self._init_mask(mask)
      self._dtype = self._data.dtype
  
imports: import ivy
  import ivy.functional.frontends.numpy
  import numpy
label_desc: Use image node_id 2 for calling the MaskedArray obj's underlying member method code with example usage: obj._init_data(data, dtype, mask, keep_mask) without return types