private BasicModel parseBasicModel(String expr) { if ("Be".equals(expr)) { return new BasicModelBE(); } else if ("D".equals(expr)) { return new BasicModelD(); } else if ("G".equals(expr)) { return new BasicModelG(); } else if ("I(F)".equals(expr)) { return new BasicModelIF(); } else if ("I(n)".equals(expr)) { return new BasicModelIn(); } else if ("I(ne)".equals(expr)) { return new BasicModelIne(); } else if ("P".equals(expr)) { return new BasicModelP(); } else { throw new RuntimeException("Invalid basicModel: " + expr); } }