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Creates a placeholder for a tf.RaggedTensor that will always be fed.

@compatibility{eager} Placeholders are not compatible with eager execution.

dtype The data type for the RaggedTensor.
ragged_rank The ragged rank for the RaggedTensor
value_shape The shape for individual flat values in the RaggedTensor.
name A name for the operation (optional).

A RaggedTensor that may be used as a handle for feeding a value, but not evaluated directly.

RuntimeError if eager execution is enabled