method MagickImage.prototype.sigmoidalContrastRe-exportimport { MagickImage } from "https://deno.land/x/imagemagick_deno@0.0.19/mod.ts"; sigmoidalContrast(contrast: number): voidsigmoidalContrast(contrast: number, midpointPercentage: Percentage): voidsigmoidalContrast(contrast: number, midpoint: number): voidsigmoidalContrast(contrast: number,midpoint: number,channels: Channels,): voidParameterscontrast: numberReturnsvoidParameterscontrast: numbermidpointPercentage: PercentageReturnsvoidParameterscontrast: numbermidpoint: numberReturnsvoidParameterscontrast: numbermidpoint: numberchannels: ChannelsReturnsvoid