code: def __check_init__(self):
      # Check if the number of dimensions of the parameters is correct, fix if needed
      if len(self.params.shape) == len(self.domain.N):
          # If only the last one is missing, add it
          if self.params.shape == self.domain.N:
              object.__setattr__(
                  self, "params", jnp.expand_dims(self.params, axis=-1)
              )
  
      if self.params.shape == self.domain.N:
          raise ValueError(
              f"The number of dimensions of the parameters is incorrect. It should be the number of dimensions of the domain plus at least one more. The parameters have shape {self.params.shape} and the domain has shape {self.domain.N}"
          )
  
imports: import warnings
  from typing import Callable, TypeVar
  import equinox
  from equinox import tree_equal
  from jax import eval_shape
  from jax import numpy
  from jax import vmap
  from jaxtyping import PyTree
  from jaxdf.core import Field
  from jaxdf.geometry import Domain
label_desc: Use image node_id 1 for calling the OnGrid obj's underlying member method code with example usage: obj.__check_init__() without return types