Accessing groups and segments using the HL7v2 Domain Specific Language
Groups and segments can be accessed by name like in a map.
import ca.uhn.hl7v2.model.Message
val message: Message = ...
// Accessing a segment
val msh = message["MSH"]
// Accessing a group
val group = message["PATIENT_RESULT"]
// Accessing a segment nested within groups
val pid = message["PATIENT_RESULT"]["PATIENT"]["PID"]
In case the structure is repeating, this simple syntax only returns the first repetition