message: [ONNXIFI] Clarify how to get output shape with data-dependent operators
  Add a note that exact shape of the output can be retrieved through Shape operator.
diff: @@ -188,7 +188,9 @@ typedef uint64_t onnxPointer;
  * so this capability requires ONNXIFI_CAPABILITY_SYMBOLIC_SIZE_TENSORS support.
  *
  * For outputs with data-dependent shapes the shape specified in onnxSetGraphIO
  - * call is interpreted as the upper limit.
  + * call is interpreted as the upper limit. The exact numerical shape of the
  + * output can be retrieved by attaching a Shape operator to the tensor with
  + * data-dependent shape and reading its output through ONNXIFI.
  */
  #define ONNXIFI_CAPABILITY_VARIABLE_SIZE_OUTPUTS 0x04
  /**
  