A transformation can be parameterized along zero, one or many axes of variability. An axis of variability describes the type of the underlying parameter and the expected valid range or values for that parameter.
Here is how some example axes can be defined:
axes: - name: blur type: int range: [3, 11] choices:  fixed: False - name: flip type: bool range:  choices: [False, True] fixed: False
name: name of the axis of variability
type: type of the axis of variability. Supports
range: range of values for numerical axes (i.e.
choices: possible values for non-numerical axes (i.e.
fixed: whether or not the value of the axis is fixed or it will be searched over during stress testing. If the axis is not fixed then
choicesshould be specified, otherwise
value: value of the axis if it is fixed and not searched over.