code: public DescribeSourceRegionsResult withSourceRegions(SourceRegion... sourceRegions) {
          if (this.sourceRegions == null) {
              setSourceRegions(new com.amazonaws.internal.SdkInternalList<SourceRegion>(sourceRegions.length));
          }
          for (SourceRegion ele : sourceRegions) {
              this.sourceRegions.add(ele);
          }
          return this;
      }
docs: <p>
  A list of SourceRegion instances that contains each source AWS Region that the current AWS Region can get a Read
  Replica or a DB snapshot from.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setSourceRegions(java.util.Collection)} or {@link #withSourceRegions(java.util.Collection)} if you want
  to override the existing values.
  </p>
  
  @param sourceRegions
  A list of SourceRegion instances that contains each source AWS Region that the current AWS Region can get
  a Read Replica or a DB snapshot from.
  @return Returns a reference to this object so that method calls can be chained together.