src/main/java/com/googlesource/gerrit/plugins/importer/client/ImportProjectScreen.java [117:129]:
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                Button okButton = new Button("OK");
                okButton.addClickHandler(event -> successDialog.hide());

                p.add(okButton);
                successDialog.add(p);

                successDialog.center();
                successDialog.show();
              }

              @Override
              public void onFailure(Throwable caught) {}
            });
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src/main/java/com/googlesource/gerrit/plugins/importer/client/ResumeImportDialog.java [90:102]:
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                  Button okButton = new Button("OK");
                  okButton.addClickHandler(event -> successDialog.hide());

                  p.add(okButton);
                  successDialog.add(p);

                  successDialog.center();
                  successDialog.show();
                }

                @Override
                public void onFailure(Throwable caught) {}
              });
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