# Functions
NewSimpleAggregateMetric instantiates an SimpleAggregateMetric struct.
NewSimpleJointAggregateMetric instantiates an SimpleJointAggregateMetric struct.
# Structs
SimpleAggregateMetric is a wrapper metric that tracks multiple univariate single-value metrics simultaneously.
SimpleJointAggregateMetric is a wrapper metric that tracks multiple multivariate single-value metrics simultaneously.