code: public static AccessCondition generateIfSequenceNumberLessThanOrEqualCondition(long sequenceNumber) {
          AccessCondition retCondition = new AccessCondition();
          retCondition.ifSequenceNumberLessThanOrEqual = sequenceNumber;
          return retCondition;
      }
docs: Returns an access condition such that an operation will be performed only if resource's current sequence
  number is less than or equal to the specified value. This condition only applies to page blobs.
  
  @param sequenceNumber
  The value to compare to the current sequence number.
  
  @return An <code>AccessCondition</code> object that represents the <i>If-Sequence-Number-LE</i> condition.