code: public SDVariable matchConditionCount(SDVariable in, Condition condition, boolean keepDims, int... dimensions) {
          return new MatchCondition(sameDiff(), in, condition, keepDims, dimensions).outputVariable();
      }
docs: Returns a count of the number of elements that satisfy the condition
  
  @param in        Input
  @param condition Condition
  @return Number of elements that the condition is satisfied for