in src/main/java/software/amazon/smithy/lsp/ProtocolAdapter.java [34:43]
public static Diagnostic toDiagnostic(ValidationEvent event) {
int line = event.getSourceLocation().getLine() - 1;
int col = event.getSourceLocation().getColumn() - 1;
DiagnosticSeverity severity = toDiagnosticSeverity(event.getSeverity());
Range range = new Range(new Position(line, 0), new Position(line, col));
return new Diagnostic(range, event.getMessage(), severity, "Smithy LSP");
}