Add alias statement to sig snippet

common-docs/reference/arrays/pop.md

@@ -3,7 +3,8 @@
 Remove and return the last element from an array.
 
 ```sig
-["hello"].pop()
+["hello"].pop();
+["hello"]._popStatement();
 ```
 
 The last element in the array is removed, so the array becomes smaller by one element.

common-docs/reference/arrays/remove-at.md

@@ -3,7 +3,8 @@
 Remove and return an element from an array at some position.
 
 ```sig
-[""].removeAt(0)
+[""].removeAt(0);
+[""]._removeAtStatement(0);
 ```
 
 The size of the array shrinks by one. The element is removed from the array at the position you want. All the other elements after it are moved (shifted) to down to the next lower position. So, an array that has the numbers

common-docs/reference/arrays/shift.md

@@ -3,7 +3,8 @@
 Remove and return the first element from an array.
 
 ```sig
-[""].shift()
+[""].shift();
+[""]._shiftStatement();
 ```
 
 The first element in the array is removed, so the array becomes smaller by one element.

common-docs/reference/arrays/unshift.md

@@ -3,7 +3,8 @@
 Add an element to the front of an array.
 
 ```sig
-[""].unshift("hello")
+[""].unshift("hello");
+[""]._unshiftStatement("hello");
 ```
 
 You might have an array with 3 numbers, like 1, 2, and 3. If you want to add another number to the front,