Dev

force-app/main/default/classes/HelloWorld.cls

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+global class HelloWorld{
+public String hello() {
+return 'Hello World!';
+
+    }
+    }

force-app/main/default/classes/HelloWorld.cls-meta.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<ApexClass xmlns="http://soap.sforce.com/2006/04/metadata">
+    <apiVersion>61.0</apiVersion>
+    <status>Active</status>
+</ApexClass>

force-app/main/default/classes/MySampleApexClass.cls

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+public class MySampleApexClass {
+  // Takes a Fahrenheit temperature and returns the Celsius equivalent.Gearset
+  public static Decimal FahrenheitToCelsius(Decimal fh) {
+    Decimal cs = (fh - 32) * 5/9;
+    return cs.setScale(2);
+  }
+}

force-app/main/default/classes/MySampleApexClass.cls-meta.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ApexClass xmlns="http://soap.sforce.com/2006/04/metadata">
+<apiVersion>61.0</apiVersion>
+<status>Active</status>
+</ApexClass>

force-app/main/default/classes/TemperatureConverter.cls

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+public class TemperatureConverter {
+  // Takes a Fahrenheit temperature and returns the Celsius equivalent.Gearset
+  public static Decimal FahrenheitToCelsius(Decimal fh) {
+    Decimal cs = (fh - 32) * 5/9;
+    return cs.setScale(2);
+  }
+}