cb.lreturn();
} else if ("F".equals(returnType)) { // float
cb.fconst_0();
cb.freturn();
} else if ("D".equals(returnType)) { // double
cb.dconst_0();
cb.dreturn();
} else if ('L' == returnType.charAt(0) ||
'[' == returnType.charAt(0)) { // references
cb.aconst_null();
cb.areturn();