How does the AddMovementInput() function interact with Velocity?

Development Character & Animation
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1

I try to find where the code actually move the Character, but I can not find it.
I am using “Go to Difinition” key in Visual Studio.

AddMovementInput(Direction, Value);

then

void APawn::Internal_AddMovementInput(FVector WorldAccel, bool bForce /*=false*/)
{
	if (bForce || !IsMoveInputIgnored())
	{
		ControlInputVector += WorldAccel;
	}
}

I have searched “ControlInputVector” in “Entire Solution”, but nothing useful.
I have also searched
“GetMovementInputVector()”
“GetPendingMovementInputVector()”
“ConsumeMovementInputVector()”
and still nothing.
Can anyone show me where this ControlInputVector interacts with Velocity?