added example df to extensionPropertiesApi.md

Author: Jolanrensen

core/generated-sources/src/test/kotlin/org/jetbrains/kotlinx/dataframe/samples/api/OtherSamples.kt

@@ -1,19 +1,23 @@
 package org.jetbrains.kotlinx.dataframe.samples.api
 
 import org.jetbrains.kotlinx.dataframe.AnyFrame
+import org.jetbrains.kotlinx.dataframe.DataFrame
 import org.jetbrains.kotlinx.dataframe.api.dataFrameOf
+import org.jetbrains.kotlinx.dataframe.api.take
 import org.jetbrains.kotlinx.dataframe.explainer.WritersideFooter
 import org.jetbrains.kotlinx.dataframe.explainer.WritersideStyle
+import org.jetbrains.kotlinx.dataframe.io.read
 import org.jetbrains.kotlinx.dataframe.io.toStandaloneHTML
 import org.junit.Test
 import java.io.File
 
 // To display code together with a table, we can use TransformDataFrameExpressions annotation together with korro
 // This class provides an ability to save only a table that can be embedded anywhere in the documentation
 class OtherSamples {
+
     @Test
     fun extensionPropertiesApi1() {
-        val df = dataFrameOf("example")(123)
+        val df = DataFrame.read("../data/titanic.csv", delimiter = ';').take(5)
         writeTable(df, "extensionPropertiesApi1")
     }
 

core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/samples/api/OtherSamples.kt

@@ -1,19 +1,23 @@
 package org.jetbrains.kotlinx.dataframe.samples.api
 
 import org.jetbrains.kotlinx.dataframe.AnyFrame
+import org.jetbrains.kotlinx.dataframe.DataFrame
 import org.jetbrains.kotlinx.dataframe.api.dataFrameOf
+import org.jetbrains.kotlinx.dataframe.api.take
 import org.jetbrains.kotlinx.dataframe.explainer.WritersideFooter
 import org.jetbrains.kotlinx.dataframe.explainer.WritersideStyle
+import org.jetbrains.kotlinx.dataframe.io.read
 import org.jetbrains.kotlinx.dataframe.io.toStandaloneHTML
 import org.junit.Test
 import java.io.File
 
 // To display code together with a table, we can use TransformDataFrameExpressions annotation together with korro
 // This class provides an ability to save only a table that can be embedded anywhere in the documentation
 class OtherSamples {
+
     @Test
     fun extensionPropertiesApi1() {
-        val df = dataFrameOf("example")(123)
+        val df = DataFrame.read("../data/titanic.csv", delimiter = ';').take(5)
         writeTable(df, "extensionPropertiesApi1")
     }