module E

export f_1, f_2, f_3

"f_1"
f_1(x) = x

"f_2"
f_2(x) = x

"f_3"
f_3(x) = x


"g_1"
g_1(x) = x

"g_2"
g_2(x) = x

"g_3"
g_3(x) = x

export T_1

"T_1"
mutable struct T_1 end

"T_2"
mutable struct T_2 end

"T_3"
struct T_3{T} end

end
