code: def _replace_empty_segments_with_constant(
      aggregated_segments: jnp.ndarray,
      segment_ids: jnp.ndarray,
      num_segments: Optional[int] = None,
      constant: float = 0.0,
  ):
      """Replaces the values of empty segments with constants."""
      result_shape = (len(segment_ids),) + aggregated_segments.shape[1:]
      num_elements_in_segment = segment_sum(
          jnp.ones(result_shape, dtype=jnp.int32),
          segment_ids,
          num_segments=num_segments,
      )
      return jnp.where(
          num_elements_in_segment > 0,
          aggregated_segments,
          jnp.array(constant, dtype=aggregated_segments.dtype),
      )
  
imports: import functools
  from typing import Any, Callable, Generator, Iterable, Iterator, List, Mapping, Optional, Sequence, Union
  import jax
  from jax import lax
  import jax.numpy
  import jax.tree_util
  from jraph._src import graph
  import numpy
label_desc: Use image node_id 6 for calling a global function with example usage: _replace_empty_segments_with_constant(aggregated_segments, segment_ids, num_segments, constant) and returns: jnp