Triple and more colon syntax

[ChessBerry]

In the file SBOZhanaseeBomb01_script.lua there is this weird triple colon syntax, which neither me nor my code understand:

self:CreateProjectile('/effects/entities/SBOZhanaseeBombEffect01/SBOZhanaseeBombEffect01_proj.bp', 0, 0, 0, 0, 10.0, 0):SetCollision(false):SetVelocity(0, 10.0, 0)
self:CreateProjectile('/effects/entities/SBOZhanaseeBombEffect02/SBOZhanaseeBombEffect02_proj.bp', 0, 0, 0, 0, 0.05, 0):SetCollision(false):SetVelocity(0, 0.05, 0)

Touching it, even w/o trying to upvalue anything causes a desync. E.g. the following does:

self:CreateProjectile('/effects/entities/SBOZhanaseeBombEffect01/SBOZhanaseeBombEffect01_proj.bp', 0, 0, 0, 0, 10.0, 0)
self:SetCollision(false)
self:SetVelocity(0, 10.0, 0)
self:CreateProjectile('/effects/entities/SBOZhanaseeBombEffect02/SBOZhanaseeBombEffect02_proj.bp', 0, 0, 0, 0, 0.05, 0)
self:SetCollision(false)
self:SetVelocity(0, 0.05, 0)

so idk what's going on

[KionX]

This should be the right way:

proj = self:CreateProjectile('/effects/entities/SBOZhanaseeBombEffect01/SBOZhanaseeBombEffect01_proj.bp', 0, 0, 0, 0, 10.0, 0)
proj:SetCollision(false)
proj:SetVelocity(0, 10.0, 0)