Hi!
I'm new in programming plugins for Rust and I'm taking a look at some plugins that have some errors. But I'm seeing that many errors are due to the fact that the libraries and their elements have been updated, and I don't know how to find what all the libraries that are used to program these plugins contain. Any idea how to fix this error:
Error while compiling: Mush.cs(302,58): error CS1061: Type SpawnPopulationBase' does not contain a definition for _targetDensity' and no extension method _targetDensity' of type SpawnPopulationBase' could be found. Are you missing an assembly reference?
And, on the other hand, any idea where I could find the contents of the libraries that are used to program rust plugins?
Thank you so much!

Decompile the rust dlls Assembly-CSharp.dll  and look at SpawnPopulationBase

I'm using ILSpy for decompiling the file you said and I have this result:
using System.Diagnostics;
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Security;
using System.Security.Permissions;

[assembly: Debuggable(DebuggableAttribute.DebuggingModes.IgnoreSymbolStoreSequencePoints)]
[assembly: CompilationRelaxations(8)]
[assembly: RuntimeCompatibility(WrapNonExceptionThrows = true)]
[assembly: SecurityPermission(SecurityAction.RequestMinimum, SkipVerification = true)]
[assembly: AssemblyVersion("*.*.*.*")]
[module: UnverifiableCode]
How can I see more things in this file?
Thank you

Use somthing like JetBrains DotPreek to decompile