code: public void setVersions(java.util.Collection<String> versions) {
          if (versions == null) {
              this.versions = null;
              return;
          }
  
          this.versions = new java.util.ArrayList<String>(versions);
      }
docs: <p>
  A list of environment image versions.
  </p>
  
  @param versions
  A list of environment image versions.