createdByLocalProject property
Whether the framework considers this the user's code rather than
package:flutter's.
This is what "summary tree" means, and it is decided by source — so
without creation tracking it is false for everything and a summary tree
is byte-for-byte the full one. Measured: dashboard is 695 nodes either
way with tracking off, and 51 with it on.
Implementation
final bool createdByLocalProject;