throw new BuildException("Not found: " + initialSmartFrogFile);
throw new BuildException(ERROR_MISSING_INITIAL_SMARTFROG_FILE + initialSmartFrogFile);
    public void setInitialSmartFrogFile(File initialSmartFrogFile) {        if (initialSmartFrogFile != null && initialSmartFrogFile.length() > 0) {            if (!initialSmartFrogFile.exists()) {                throw new BuildException("Not found: " + initialSmartFrogFile);            }            if (!initialSmartFrogFile.isFile()) {                throw new BuildException("Unexpected file type: " + initialSmartFrogFile);            }        }        this.initialSmartFrogFile = initialSmartFrogFile;    }