Helper Parametric Functions for Generator Type

# I found myself typing a bunch of these lines:

for (E : Entity.FindDescendantEntities(E_MyEntity)) { E } [0]
 
# and it got me looking into making parametric helper functions

(Generator:generator(t)).First<public>(() where t:type)<decides><transacts>:t=
    for (Element : Generator) { Element } [0]

(Generator:generator(t)).Last<public>(() where t:type)<decides><transacts>:t=
    Elements := for (Element : Generator) { Element }
    Elements[Elements.Length-1]

(Generator:generator(t)).At<public>(Index:int where t:type)<decides><transacts>:t=
    for (Element : Generator) { Element } [Index]

(Generator:generator(t)).Elements<public>(() where t:type)<transacts>:[]t=
    for (Element : Generator) { Element }