public static BytecodeGetField at(Method method, int bci) {
BytecodeGetField b = new BytecodeGetField(method, bci);
if (Assert.ASSERTS_ENABLED) {
b.verify();
}
return b;
}
/** Like at, but returns null if the BCI is not at getfield */
public static BytecodeGetField atCheck(Method method, int bci) {
BytecodeGetField b = new BytecodeGetField(method, bci);
return (b.isValid() ? b : null);
}