public int getEstimatedNumIterations() {
    return estimatedNumIterations;
  }
Returns the estimated total number of iterations for the ongoing execution
of the owning feature method. The value is obtained by calling
<tt>size()</tt> on each data provider before the first iteration is run.
It is only an estimate and won't change during feature execution (i.e. all
<tt>FeatureInfo<tt>s will return the same value).

@return the estimated total number of iterations for the execution
of the owning feature method
spock-core/src/main/java/org/spockframework/runtime/model/IterationInfo.java