static Builder builder() {
      return new org.datatransferproject.types.common.models.calendar.AutoValue_RecurrenceRule_RRule.Builder();
    }
A method for parsing an ExDate string in an {@link ExDate}

@param exDateString a string containing ExDate information, excluding the EXDATE prefix
@return an {@link ExDate}
portability-types-common/src/main/java/org/datatransferproject/types/common/models/calendar/RecurrenceRule.java