Function replicate 

pub fn replicate(inp: &VipsImage, across: i32, down: i32) -> Result<VipsImage>

VipsReplicate (replicate), replicate an image inp: &VipsImage -> Input image across: i32 -> Repeat this many times horizontally min: 1, max: 1000000, default: 1 down: i32 -> Repeat this many times vertically min: 1, max: 1000000, default: 1 returns VipsImage - Output image