function createCorrelationGroup(correlationGroupJson) {
  const groupFlags = correlationGroupJson.groupFlags;
  const rotationThetas = Cartesian3.fromArray(
    correlationGroupJson.rotationThetas,
    0,
    new Cartesian3(),
  );
  const params = [];
  for (const paramJson of correlationGroupJson.params) {
    const param = new Spdcf({
      A: paramJson.A,
      alpha: paramJson.alpha,
      beta: paramJson.beta,
      T: paramJson.T,
    });
    params.push(param);
  }
  const correlationGroup = new CorrelationGroup({
    groupFlags: groupFlags,
    rotationThetas: rotationThetas,
    params: params,
  });
  return correlationGroup;
}
Creates a `CorrelationGroup` from the given JSON representation

@param {object} correlationGroupJson The input JSON
@returns {CorrelationGroup} The correlation group