domainAxisSpec property
      
      set
      domainAxisSpec
      (AxisSpec<D>  axisSpec) 
      
    
    
Create a new domain axis and save the new spec to be applied during configurationChanged.
Implementation
set domainAxisSpec(AxisSpec<D> axisSpec) {
  if (_domainAxisSpec != axisSpec) {
    _newDomainAxis = createDomainAxisFromSpec(axisSpec);
    _newDomainAxisSpec = axisSpec;
  }
}