question: returns the reference date and time of an enrollment . concode_field_sep String scheduleName concode_elem_sep DateTime enrollmentDateTime concode_elem_sep DateTime dueStart concode_elem_sep Map<String,String> metadata concode_elem_sep String currentMilestoneName concode_elem_sep DateTime maxStart concode_elem_sep DateTime referenceDateTime concode_elem_sep DateTime lateStart concode_elem_sep String externalId concode_elem_sep DateTime earliestStart concode_elem_sep Time preferredAlertTime concode_elem_sep String status concode_field_sep Map<String,String> getMetadata concode_elem_sep DateTime getStartOfLateWindow concode_elem_sep EnrollmentRecord setCurrentMilestoneName concode_elem_sep EnrollmentRecord setEnrollmentDateTime concode_elem_sep DateTime getEnrollmentDateTime concode_elem_sep Time getPreferredAlertTime concode_elem_sep String getExternalId concode_elem_sep String getScheduleName concode_elem_sep String getStatus concode_elem_sep EnrollmentRecord setStatus concode_elem_sep EnrollmentRecord setMetadata concode_elem_sep EnrollmentRecord setDueStart concode_elem_sep EnrollmentRecord setEarliestStart concode_elem_sep DateTime getStartOfEarliestWindow concode_elem_sep String getCurrentMilestoneName concode_elem_sep EnrollmentRecord setPreferredAlertTime concode_elem_sep DateTime getStartOfMaxWindow concode_elem_sep EnrollmentRecord setScheduleName concode_elem_sep EnrollmentRecord setExternalId concode_elem_sep EnrollmentRecord setReferenceDateTime concode_elem_sep EnrollmentRecord setLateStart concode_elem_sep EnrollmentRecord setMaxStart concode_elem_sep DateTime getStartOfDueWindow
target: DateTime function ( ) { return referenceDateTime ; }