class_docstr: Pipeline for text-guided depth-based image-to-image generation using Stable Diffusion.
  
  This model inherits from [`DiffusionPipeline`]. Check the superclass documentation for the generic methods
  implemented for all pipelines (downloading, saving, running on a particular device, etc.).
  
  The pipeline also inherits the following loading methods:
      - [`~loaders.TextualInversionLoaderMixin.load_textual_inversion`] for loading textual inversion embeddings
      - [`~loaders.LoraLoaderMixin.load_lora_weights`] for loading LoRA weights
      - [`~loaders.LoraLoaderMixin.save_lora_weights`] for saving LoRA weights
  
  Args:
      vae ([`AutoencoderKL`]):
          Variational Auto-Encoder (VAE) model to encode and decode images to and from latent representations.
      text_encoder ([`~transformers.CLIPTextModel`]):
          Frozen text-encoder ([clip-vit-large-patch14](https://huggingface.co/openai/clip-vit-large-patch14)).
      tokenizer ([`~transformers.CLIPTokenizer`]):
          A `CLIPTokenizer` to tokenize text.
      unet ([`UNet2DConditionModel`]):
          A `UNet2DConditionModel` to denoise the encoded image latents.
      scheduler ([`SchedulerMixin`]):
          A scheduler to be used in combination with `unet` to denoise the encoded image latents. Can be one of
          [`DDIMScheduler`], [`LMSDiscreteScheduler`], or [`PNDMScheduler`].
code: def check_inputs(
      self,
      prompt,
      strength,
      callback_steps,
      negative_prompt=None,
      prompt_embeds=None,
      negative_prompt_embeds=None,
      callback_on_step_end_tensor_inputs=None,
  ):
      if strength < 0 or strength > 1:
          raise ValueError(
              f"The value of strength should in [0.0, 1.0] but is {strength}"
          )
  
      if callback_steps is not None and (
          not isinstance(callback_steps, int) or callback_steps <= 0
      ):
          raise ValueError(
              f"`callback_steps` has to be a positive integer but is {callback_steps} of type"
              f" {type(callback_steps)}."
          )
  
      if callback_on_step_end_tensor_inputs is not None and not all(
          k in self._callback_tensor_inputs
          for k in callback_on_step_end_tensor_inputs
      ):
          raise ValueError(
              f"`callback_on_step_end_tensor_inputs` has to be in {self._callback_tensor_inputs}, but found {[k for k in callback_on_step_end_tensor_inputs if k not in self._callback_tensor_inputs]}"
          )
      if prompt is not None and prompt_embeds is not None:
          raise ValueError(
              f"Cannot forward both `prompt`: {prompt} and `prompt_embeds`: {prompt_embeds}. Please make sure to"
              " only forward one of the two."
          )
      elif prompt is None and prompt_embeds is None:
          raise ValueError(
              "Provide either `prompt` or `prompt_embeds`. Cannot leave both `prompt` and `prompt_embeds` undefined."
          )
      elif prompt is not None and (
          not isinstance(prompt, str) and not isinstance(prompt, list)
      ):
          raise ValueError(
              f"`prompt` has to be of type `str` or `list` but is {type(prompt)}"
          )
  
      if (
          negative_prompt is not None
          and negative_prompt_embeds is not None
      ):
          raise ValueError(
              f"Cannot forward both `negative_prompt`: {negative_prompt} and `negative_prompt_embeds`:"
              f" {negative_prompt_embeds}. Please make sure to only forward one of the two."
          )
  
      if (
          prompt_embeds is not None
          and negative_prompt_embeds is not None
      ):
          if prompt_embeds.shape != negative_prompt_embeds.shape:
              raise ValueError(
                  "`prompt_embeds` and `negative_prompt_embeds` must have the same shape when passed directly, but"
                  f" got: `prompt_embeds` {prompt_embeds.shape} != `negative_prompt_embeds`"
                  f" {negative_prompt_embeds.shape}."
              )
  
imports: import contextlib
  import inspect
  from typing import Any, Callable, Dict, List, Optional, Union
  import numpy
  import PIL.Image
  import torch
  from packaging import version
  from transformers import CLIPTextModel, CLIPTokenizer, DPTFeatureExtractor, DPTForDepthEstimation
  from ...configuration_utils import FrozenDict
  from ...image_processor import PipelineImageInput, VaeImageProcessor
  from ...loaders import LoraLoaderMixin, TextualInversionLoaderMixin
  from ...models import AutoencoderKL, UNet2DConditionModel
  from ...models.lora import adjust_lora_scale_text_encoder
  from ...schedulers import KarrasDiffusionSchedulers
  from ...utils import PIL_INTERPOLATION, USE_PEFT_BACKEND, deprecate, logging, scale_lora_layers, unscale_lora_layers
  from ...utils.torch_utils import randn_tensor
  from ..pipeline_utils import DiffusionPipeline, ImagePipelineOutput
label_desc: Use image node_id 7 for calling the StableDiffusionDepth2ImgPipeline obj's underlying member method code with example usage: obj.check_inputs(prompt, strength, callback_steps, negative_prompt, prompt_embeds, negative_prompt_embeds, callback_on_step_end_tensor_inputs) without return types