google.adk.evaluation.eval_metrics.Interval
https://github.com/google/adk-python/blob/v1.23.0/src/google/adk/evaluation/eval_metrics.py#L338
Represents a range of numeric values, e.g.
[0 ,1]
or (2,3) or [-1, 6).
min_value
open_at_min
max_value
open_at_max