code: public void setSupplementalImps(java.util.Collection<String> supplementalImps) {
          if (supplementalImps == null) {
              this.supplementalImps = null;
              return;
          }
  
          this.supplementalImps = new java.util.ArrayList<String>(supplementalImps);
      }
docs: Provide a list of any necessary supplemental IMPs. You need supplemental IMPs if the CPL that you're using for
  your input is in an incomplete IMP. Specify either the supplemental IMP directories with a trailing slash or the
  ASSETMAP.xml files. For example ["s3://bucket/ov/", "s3://bucket/vf2/ASSETMAP.xml"]. You don't need to specify the
  IMP that contains your input CPL, because the service automatically detects it.
  
  @param supplementalImps
  Provide a list of any necessary supplemental IMPs. You need supplemental IMPs if the CPL that you're using
  for your input is in an incomplete IMP. Specify either the supplemental IMP directories with a trailing
  slash or the ASSETMAP.xml files. For example ["s3://bucket/ov/", "s3://bucket/vf2/ASSETMAP.xml"]. You
  don't need to specify the IMP that contains your input CPL, because the service automatically detects it.