Add a field object to the structure definition
Get a field object from the structure by name.
Set the value of a structure - this automatically unpacks the string into the structure objects list of fields, and doe sthe SAP to Python data type conversions. Returns a Hash object of the fieldname/value pairs of the structure.
Automatically packs the current value of all the structure fields into the structure and returns the complete value as a string (in all the appropriate SAP data types)