if(SERVER) then
function SWEP:Deploy()
    local idx = self.Owner:EntIndex()
    local hk = "swepcheckjump" .. idx
    self:CallOnRemove("cleanupswepcheckjump",hook.Remove,"KeyPress",hk)
    hook.Add("KeyPress",hk,function(pl,key)
        if(pl == self.Owner && key == IN_JUMP) then
            self:OnOwnerJumped()
        end
    end)
    return true
end

function SWEP:OnOwnerJumped()
    self.Owner:EmitSound("path/to/sound",75,100)
end

function SWEP:Holster()
    local idx = self.Owner:EntIndex()
    local hk = "swepcheckjump" .. idx
    self:RemoveCallOnRemove("cleanupswepcheckjump")
    hook.Remove("KeyPress",hk)
end
end