@startuml
!include <material/swap_horizontal>

left to right direction
skinparam defaultTextAlignment center

rectangle "<$ma_swap_horizontal>\nSync" as block #LightPink

interface " " as q1
interface " " as q2
interface " " as q3
interface " " as q4
interface " " as q5
interface " " as q6

q1 --> block: in1
q2 ..> block: ...
q3 --> block: inn
block --> q4: out1
block ..> q5: ...
block --> q6: outn
@enduml
