Unity giving me syntax errors for custom hlsl shader functions in shader graph

I was trying to write a custom function node but I'm getting syntax errors.

Code (CSharp):

1. void Outline_float(float4 ScreenPos, float4 Color, Texture2D DepthNormalsTexture, SamplerState Sampler, float2 Texel, float SampleDistance, float Falloff, float SensitivityNormals, float SensitivityDepth, out float4 Out)
2. {
3. float ns_DecodeFloatRG (float2 enc) {
4.         float2 kDecodeDot = float2(1.0, 1 / 255.0);
5.         return dot(enc, kDecodeDot);
6.     }
7.  
8.  
9.     float checkSame(float2 centerNormal, float centerDepth, float4 theSample, float sensitivityNormals, float sensitivityDepth) {
10.         float2 diff = abs(centerNormal - theSample.xy) * sensitivityNormals;
11.         int isSameNormal = (diff.x + diff.y) < 0.1;
12.         float sampleDepth = ns_DecodeFloatRG(theSample.zw);
13.         float zdiff = abs(centerDepth - sampleDepth);
14.         int isSameDepth = zdiff * sensitivityDepth < 0.99 * centerDepth;
15.         return (isSameNormal * isSameDepth) ? 1.0 : 0.0;
16.     }
17.  
18.     float4 edgeColor() {
19.         float sampleSizeX = Texel.x;
20.         float sampleSizeY = Texel.y;
21.         float2 screenUV = ScreenPos.xy;
22.  
23.         float2 _uv2 = screenUV + float2(-sampleSizeX, +sampleSizeY) * SampleDistance;
24.         float2 _uv3 = screenUV + float2(+sampleSizeX, -sampleSizeY) * SampleDistance;
25.         float2 _uv4 = screenUV + float2(sampleSizeX, sampleSizeY) * SampleDistance;
26.         float2 _uv5 = screenUV + float2(-sampleSizeX, -sampleSizeY) * SampleDistance;
27.  
28.         float4 center = SAMPLE_TEXTURE2D(DepthNormalsTexture, Sampler, screenUV);
29.         float4 sample1 = SAMPLE_TEXTURE2D(DepthNormalsTexture, Sampler, _uv2);
30.         float4 sample2 = SAMPLE_TEXTURE2D(DepthNormalsTexture, Sampler, _uv3);
31.         float4 sample3 = SAMPLE_TEXTURE2D(DepthNormalsTexture, Sampler, _uv4);
32.         float4 sample4 = SAMPLE_TEXTURE2D(DepthNormalsTexture, Sampler, _uv5);
33.  
34.         float edge = 1.0;
35.  
36.         float2 centerNormal = center.xy;
37.         float centerDepth = ns_DecodeFloatRG(center.zw);
38.  
39.         float d = clamp(centerDepth * Falloff - 0.05, 0.0, 1.0);
40.         float4 depthFade = float4(d, d, d, 1.0);
41.  
42.         edge *= checkSame(centerNormal, centerDepth, sample1, sensitivityNormals, sensitivityDepth);
43.         edge *= checkSame(centerNormal, centerDepth, sample2, sensitivityNormals, sensitivityDepth);
44.         edge *= checkSame(centerNormal, centerDepth, sample3, sensitivityNormals, sensitivityDepth);
45.         edge *= checkSame(centerNormal, centerDepth, sample4, sensitivityNormals, sensitivityDepth);
46.  
47.         return edge * Color + (1.0 - edge) * (depthFade * Color);
48.     }
49.    
50.    
51.     Out = edgeColor();
52. }

I don't see where my errors are...

 

This was a dumb mistake, I believe I just had to put the methods outside of the void method