This is the core functionality of this function. Take a look at the
"opname", and then take a look at this little snippet from inside
"step";
if not hasattr(self, inst.opname):
       unimplemented(f"missing: {inst.opname}")
   getattr(self, inst.opname)(inst)
As we can see, the function checks if the current class, the
"InstructionTranslator" has an attribute set matching the operator
name (for example, "LOAD_CONST"). If it does, the function invokes it,
passing the whole instruction object in. If it does not, the function
drops the frame as unimplemented.
For the "LOAD_CONST" example, we can see that we do indeed support it,
with a relatively straightforward definition:
def  LOAD_CONST(self, inst):
   self.push(ConstantVariable(value=inst.argval))
We can see that this function creates a new instance of the class
"ConstantVariable" , with a value, in our example case, -1, and then
pushes it onto the stack.
There are dozens of such methods - see "symbolic_convert.py" for all