Patt#17. "Assembly-Part" Pattern // aggregate patterns

Typical object interactions
- monitor --> monitor
- acceptReport <-- report
- calcOverParts --> calcForMe
- rankParts --> rateMe
Examples
- aircraft-engine; engine - engine part.
Combinations
Also, when "assembly" or "part" is a specific item:
Related strategy: Str#21.
"Select Collections of Objects" Strategy
Aggregate patterns
Patterns for building object
models