public final void setDialogPreviewShape(@NonNull final PreviewShape previewShape) {
        Condition.INSTANCE.ensureNotNull(previewShape, "The preview shape may not be null");
        this.dialogPreviewShape = previewShape;
    }
public final void setDialogPreviewShape ( @ NonNull final PreviewShape previewShape ) { Condition . INSTANCE . ensureNotNull ( previewShape , "The preview shape may not be null" ) ; this . dialogPreviewShape = previewShape ; }
Sets the shape, which should be used to preview colors in the preference's dialog.

@param previewShape
The shape, which should be set, as a value of the enum {@link PreviewShape}. The
shape may not be null